How severe is GHSA-f2c5-997w-7f5c?

GHSA-f2c5-997w-7f5c has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-f2c5-997w-7f5c?

GHSA-f2c5-997w-7f5c affects the following packages: peertube (npm). Ecosystems affected: npm.

How do I fix GHSA-f2c5-997w-7f5c?

Update peertube to 3.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f2c5-997w-7f5c is resolved across your whole dependency graph.

How do I detect GHSA-f2c5-997w-7f5c in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for peertube. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-f2c5-997w-7f5c if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-f2c5-997w-7f5c?

O3 pinpoints whether GHSA-f2c5-997w-7f5c is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-f2c5-997w-7f5c actively exploited in the wild?

Yes. There are 1 known exploit references for GHSA-f2c5-997w-7f5c, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-f2c5-997w-7f5c?

GHSA-f2c5-997w-7f5c has an EPSS (Exploit Prediction Scoring System) score of 0.9%, placing it in the 54th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was GHSA-f2c5-997w-7f5c published, and has it been updated?

GHSA-f2c5-997w-7f5c was published on September 20, 2021 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-f2c5-997w-7f5c: Cross-site Scripting in peertube (Medium 6…

EPSS Exploitation Probability

via FIRST.org ↗

0.9%probability of exploitation in next 30 days

Lower Risk54th percentile+0.56%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

📦peertube

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.

Description

peertube is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). It was found that one could upload a SVG image and then send the url of that to other users and when they open the link we can get their complete session keys as the session keys stored in local storage and with Javascript easily can be stolen by attackers.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`peertube`	all versions	3.4.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for peertube. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update peertube to 3.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f2c5-997w-7f5c is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-f2c5-997w-7f5c is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-f2c5-997w-7f5c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

peertube is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). It was found that one could upload a SVG image and then send the url of that to other users and when they open the link we can get their complete session keys as the session keys stored in local storage and with Javascript easily can be stolen by attackers.

O3 Security · Impact-Aware SCA

Is GHSA-f2c5-997w-7f5c in your dependencies?

O3 detects GHSA-f2c5-997w-7f5c across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

GHSA-f2c5-997w-7f5c